a$.$ What is the expected return on an equally weighted portfolio of these three stocks?

$($Do not round intermediate calculations and enter your answer as a percent

rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

b$.$ What is the variance of a portfolio invested $15$ percent each in A and $B$ and $70$ percent

in C$?($Do not round intermediate calculations and round your answer to $6$ decimal

places, e$.$g$.,\mathrm{.}161616.)$